Non-isocyanate curing system propellant and preparation method thereof
A non-isocyanate and propellant technology, applied in the direction of explosives, etc., can solve the problems that cannot meet the requirements of high-performance weapon systems, less research on interface enhancement, and low mechanical properties of propellants, so as to eliminate residual thermal stress and improve Mechanical properties, the effect of improving mechanical properties
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Embodiment 1
[0052] (1) prepare terminal alkyne group neutral polymer bonding agent, its infrared spectrogram is as figure 1 shown;
[0053] (a) dissolving the hydroxyl-terminated neutral polymer bonding agent NBPA in tetrahydrofuran to obtain a solution, and adding sodium hydride in proportion to the solution in a nitrogen atmosphere, wherein the molar percentage of NBPA and sodium hydride is 1:4;
[0054] (b) Move the mixed solution obtained in step (a) into a constant temperature reaction bath at 30° C., and the reaction time is 4 hours;
[0055] (c) The reactant obtained in step (b) is moved into an ice-water bath, and after the temperature is balanced, propyne bromide is added dropwise in proportion, and the molar ratio of propyne bromide to sodium hydride is 1:1.5;
[0056] (d) Seal the reactant obtained in step (c) with nitrogen gas, and move the reaction system into a temperature environment of 20°C, and continue to react at 20°C for 48h;
[0057] (e) filtering the reactant obtaine...
Embodiment 2
[0076] (1) Propellant formula composition (mass percentage %):
[0077]
[0078] (2) Propellant performance:
[0079] Theoretical standard specific impulse: 2657.8N.s / kg (271.2s)
[0080] Blank formula mechanical properties:
[0081] Maximum tensile strength σ at 20°C m =0.38MPa, maximum elongation ε m =102.8%
[0082] Maximum elongation at 70℃ε m =35.9%
[0083] -40℃maximum elongationε m = 38.7%
[0084] Mechanical properties after adding combined bonding agent:
[0085] Maximum tensile strength σ at 20°C m =0.57MPa, maximum elongation ε m =79.6%
[0086] Maximum elongation at 70℃ε m =46.7%
[0087] -40℃maximum elongationε m =48.4%
Embodiment 3
[0089] (1) Propellant formula composition (mass percentage %):
[0090]
[0091] (2) Propellant performance:
[0092] Theoretical standard specific impulse: 2655.8N.s / kg (271s)
[0093] Blank formula mechanical properties:
[0094] Maximum tensile strength σ at 20°C m =0.41MPa, maximum elongation ε m =95.7%
[0095] Maximum elongation at 70℃ε m = 37.9%
[0096] -40℃maximum elongationε m =40.1%
[0097] Mechanical properties after adding combined bonding agent:
[0098] Maximum tensile strength σ at 20°C m =0.61MPa, maximum elongation ε m =79.6%
[0099] Maximum elongation at 70℃ε m =48.3%
[0100] -40℃maximum elongationε m =50.4%
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